Friday, January 15, 2010

The Clearest Water in The World

Is right here,
at Te Waikoropupu
Springs, or as locals
affectionately know it,
Pupu Springs.
The springs are located
in the Golden Bay
region of our Tasman

And yes it does have officially the clearest water in the whole world.

They pump out a combined 14,000 litres of water a second, or 1,200,000m³ each 24hrs.

As Wikipedia say

The horizontal visibility of the water in the springs has been measured at an average of 63 metres, a world record for fresh water

In fact so clear that, with optical instruments, scientists have said it approaches the theoretical maximum for optically pure water. If you are interested in the full terminology for “average black-body visibility” then I believe the above links will satisfy your craving.

Famous photo over here of diver under the water.


  1. I rememeber these as a child - fascinated by them. So very clear - almost beyond reality. Fond Memories indeed

    1. me too from a time long ago when my parents took us for a long Sunday drive, along with feeding the eels, et al.

  2. ...and just in case you thought it was the clearest water in the recent times a small lake up in the Nelson Lakes National Park has been crowned the new world champ, and not just by a bit, by metres of "extended optical visibility"!